Centrifugal concentrator.



PATENTED JAN. 14, 1908.

2 SHEETS-SHEET l.

INVENTORS.

a @KEY yad@ E. HEARING & FLA. DUDLEY. GENTRIFUGAL GONGENTRATOR.

APPLICATION FILED JUNE 5.1907.

E. HEARING & F. A. DUDLEY.

CENTRIFUGAL CONCENTRAI'OR.

APPLICATION FILED JUNE 5.1907.

2 SHBETS-SHEET 2.

'lill/[111111110 WITNESSES PATENTED JAN. 14, 1908.

EDWARD HEARING AND FRED A.'DUDLEY, OF KELLOGG, IDAHO.

CENTRIFUG-AL CONCENTRATO-I..

Specification of Letters Patent.

Patented Jan. 14, 190e.

Application filed June 5. 1907. Serial No. 377.352.

To all 'whom it may concern:

Be it known that we, EDWARD HEARING and FRED A. DUDLEY, citizens of theUnited States, residing at Kellogg, in the county of Shoshone and Stateof Idaho, have invented new and useful Improvements in CentrifugalConcentrators, of which the following is a speciiication.

Our invention relates to an apparatus for concentrating ores and likematerial, and it consists in the combination of parts, and in details ofconstruction which will be more fully explained by reference to theaccompanying drawings, in which- Figure 1 is a vertical section showingthe construction of our centrifugal concentrator. Fig. 2 is a plan viewlpartly broken away. Fig. 3 is a section of the rim.

This invention is a centrifugally acting concentrator which is designedto be used in the separation of' iine ore from pulp and slimes whichaccompany it, and which are so hard to separate on any other type ofapparatus now in use.

The machine is designed to run at a high rate of speed, and acts by theretardation of a portion of the material which is passing over the diskswhich will cause the ore to be carried back and delivered to what weterm hydraulic separators" on the outer periphery of the machine; andfrom which separators the separated material is discharged intocollecting launders or receivers.

1, 2 and 3 are disks which may be of any suitable diameter andproportions, and which are separated from each other by metal blocks 5.These blocks may be set radially or tangentially to a central circle ofsmall diameter, and serve to hold the disks the desired distance apart.

For a proportionate apparatus, the upper disk may be 6 feet in outsidediameter, and have an 18 inch central opening; this inner edge beingcurved upwardly as shown.

The central diskmay be flat, to be 5 feet more or less in diameter, andsecured to a vertical drive shaft or arbor21 by means of a cast iron hubor center 19 carried by the driving shaft or arbor.

The lower disk may have an outside dialneter of 6 feet, and the centralopening of approXimately 2 feet 5 inches; the periphery of the centralopening being curved downwardly to form a lip which may fit anddischarge into the tailing launder or receiver, which is shown at 28.

The vertical shaft or arbor 21 is here shown having a stem -or spindle22 which rests and is turnable upon anti-frictional support or step madein any usualor suitable manner as illustrated at 23.

26 is a base or standard suitably secured in place and having anupwardly extending arm carrying a journal-box 25 for the upper portionof the arbor.

29 is a pulley between the upper and lower bearings, and which pulleyillustrates ameans for transmitting motion to the vertical arbor orshaft, and the parts connected therewith.

The outer rim 4 of the machine incloses y the periphery of the disks 1and 3, said rim being preferably made in sections. In the present casewe have shown this rim made in four sections, leaving spaces of about 4inches at their contiguous ends; and these spaces are iilled by thehydraulic separators to be hereafter described.

The rim may be madefrom 4 inch, or other dimensioned channel iron orsteel, and bolted to the upper and lower disks which are thus held thatdistance apart.

The hydraulic separators consist of an exterior cast case; each casefitting into the space prepared for it between the end of the rimsections, and the case is `bolted to the rim and also to the outsidedisks 1 and 3. The inner faces of these separators are depressed orsaucer-shaped spaces which connect with openings 7 leading from theseparator to the interior of the machine, and through these openings theore must pass.

From the separator chambers, pipes 8 of small size curve downwardly andinwardly, and discharge into a launder or .trough 27 through which allthe separated ore must pass.

9 represents the interior chamber of the separators which is illed withwater under hydraulic pressure, and through this chamber all the oremustpass.

10 are radially disposed hydraulic pipes which furnish water to theseparator and which revolve with the machine.

11 is a hollow cross having a screw upon one side to connect it with thevertical'shaft, and an opening upon the upper side to receive a verticaland revoluble hydraulic pipe. The radial pipes 10 extend outwardly fromthis cross yas previously stated. The main upright supply pipe 12 isthus revoluble with the machine.

' ./13 is a stationary pipe through whichl Water is brought to theapparatus and delivered'to the pipe 12.

The pipes are connected by a stuffing-box or other suitable joint whichallows the lower pipe 12 to turn with relation to the supply pipe 13.

15 is a valve by which the supplyofwater to the apparatus is controlled.

The pipes 10 are here shown as extending radially outward from thecentral cross to a point intermediate between the center and peripherywhere they are carried upward above the upper disk 1; thence outwardlyto discharge into the separators. These changes of direction areeffected by means of elbows at 17 and 18; or in any usual manner.

30 is a supply pipe or launder through which the pulp is brought to themachine, and is delivered through the central opening of the upper disk1.

The pulp falls. upon the top of the center disk, and is thus thrownoutward by centrifugal force to the rim of the machine. The effect ofthis centrifugal force is to cause the fine particles to reach the rimfirst; the .heavier ore finding itsl Way'through the pulp to the rim ofthe machine. The rate of revolution of the machine may be varied andregulated to suit conditions,

' but the tendency will be to travel faster chine itself.

than the Water or pulp, the inert-ia of which causes itto continuallyfall behind the ma- This will keep the ore moving backwardly from thepoint or place where it iirst strikes the rim, and when it has arrivedat one of the openings 7, a portion of it will pass through t e openingand into the separator 6 to'which it leads; the water under hydraulicpressure assing through the branch pipes 10 into t e chamber of theseparator 9, and inwardly through the openings 7 with just enoughpressure s o that the ore -Will acted upon by the centrifugal force willpass throughthe opening into the chamber 9 of the separator While thelighter pulp and material Will be prevented from entering. The ore thusreceived into the separators will fall to the bottomfand will pass outthrough the discharge pipes 8 which will also be filled with the Water,and the ore thus discharged ass into the discharge assage or laundlir 27by which it is conveyed) to any desired receptacle or point ofdischarge. Such portion ofthe ore as passes one of the separatorswithout being caught will continue its way around the rlm until itreaches the It will be manifest that various changesor modifications maybe made in this a paratus; but the operation in any case will besubstantially similar to that herein described.

Having thus described our invention, what we claim and desire to' secureby Letters Patent is 1. A concentrating apparatus consisting of aplurality of horizontally revoluble superposed disks, independentseparating chambers carried by the disks at the periphery thereof andhaving openings thereinto, each of said chambers consisting of aseparate casting' independently fitted to the a paratus, means forsupplying the separab e material to he delivered outwardly bycentrifugal force, and caused to pass over the openings into theseparators, and pipes whereby water' under pressure is delivered intotheseparators so as to form a counter current through the receivingopenings.

2. In an apparatus for concentrating ores,

a horizontally revoluble circular structure, Y

said structure being formed of sections whose adjacent ends are spacedfrom each other, means for supplying material near the center to becarried outwardly by centrifugal ac i tion, a series of closedindependent chambers located around the periphery and iitted to thespaces between thesections of the structure, said chambers havingentrance open- Y having discharge openin s in the bottoms,

an intermediatedisk of ess diameter than the outer ones. and revolubletherewith, means to supply material upon the central portion of saiddisk to be delivered outwardly against the perforated rim. and means toreturn waste material towards the centerl beneath the center disk.

, 4. In a concentrating apparatus, a pair of horizontally revolubledisks of substantially equal diameter, a third disk of less diameterdisposed' between theV first named disks, separating blocks to which-tlie disks are fixed, and bywhich the distance between them isdetermined, arim iixed to the peripheries of the upper and lower disks,said rim being formed of sections whose adjacent ends are spaced fromeach other7 independent castings iixed to the rim and filling the spacesbetween the rim sections', said castings forming concentrating; chambersand havmg depresslons and lnlet openings connectmg with the centralspace, means for supplying material upon the central portion of theintermediate disk whereby lit is dislighter material is prevented fromentering and is caused to return beneath the central disk, dischargepipes connecting with4 the bottom of the concentrating chambers, andlaunders into which the ore from said pipe and the tailings' from thebottom disk, are respectively delivered.

In testimony whereof we havehereunto set our hands in presence of twosubscribing witnesses.

EDWARD HEARING FREDI A. DUDLEY.

Witnesses: l

JosIAH JONES, E. H. BAKER.

